摘要:
A computer-implemented method of automatically locating a portion of interest in image or matrix data derived from an item under consideration comprises: identifying parts of the image or matrix data that satisfy a preset threshold as objects which are possibly parts of the portion of the interest; applying at least one preselected filter to the data corresponding to the objects to find a set of objects consisting of the objects most likely to be part of the portion of interest; sorting the objects of the set into clusters according to a predefined criterion; and using a known characteristic of the portion of interest to identify which one of the clusters corresponds to the portion of interest.
摘要:
By successively depositing the layers of a backing material (1), an inorganic piezoelectric element layer (91a), a sound-adjustment layer (94), an organic layer (95), and an electrical conductive layer (96), and dicing at any pitch in the direction of the laminated layers from the electrical conductive layer (96) to the inorganic piezoelectric element layer (91a), pieces of a plurality of inorganic piezoelectric elements (2), a first sound-adjustment layer (3), a lower organic layer (42), and a signal electrode layer (44) are formed by aligning and sequentially overlaying. An upper organic layer (41) and a ground electrode layer (43) are overlain and bonded on the signal electrode layer (44). A plurality of organic piezoelectric elements (5) composed of the signal electrode layer (44), the upper organic layer (41), and the ground electrode layer (43) are formed.
摘要:
Briefly, in accordance with one or more embodiments, a probe of a probe systems may comprise a linear and/or two-dimensional sensor array for obtaining information regarding a test piece. The sensor elements of the sensor array may comprise ultrasonic, Eddy Current, magnetic, and/or piezoelectric elements or the like. The sensor array may be utilized to detect movement of the probe with respect to the test piece, and may be further utilized to obtain data regarding the test piece, such as image data, for example with respect to a characteristic of the test piece in detecting and locating flaws. A CAD type file or other graphical or image file of the test piece may be displayed concurrently with image data of the test piece obtained by the probe for example to assist an operator in navigating the probe with respect to the test piece, and/or to determine a coordinate location of characteristics of the test piece with respect to the CAD type file.
摘要:
A primary object of the present invention is to provide ultrasonic inspection equipment and method which facilitate alignment of display positions of three-dimensional ultrasonic inspection data and three-dimensional shape data, and which are capable of quickly discriminating between a defect echo and an inner-wall echo. A computer (102A) has a position correction function of correcting a relative display position between three-dimensional shape data and three-dimensional ultrasonic inspection data. According to the position correction function, a display position of the three-dimensional ultrasonic inspection data or that of the three-dimensional shape data is moved by a norm of a mean vector along the mean vector that is calculated from a plurality of vectors defined by a plurality of points selected in the three-dimensional ultrasonic inspection data and by a plurality of points selected in the three-dimensional shape data, the points selected in the three-dimensional shape data corresponding to the points selected in the three-dimensional ultrasonic inspection data respectively. The three-dimensional shape data and the three-dimensional ultrasonic inspection data are displayed in such a manner as to be superimposed on each other on a three-dimensional display unit (103C).
摘要:
An ultrasound imaging system includes an ultrasound probe having an array of transducer elements (12) divided into a plurality of contiguous transmit sub-apertures (14 a,b,c,d,e). A plurality of transmitters coupled to the sub-apertures of the ultrasound transducer apply respective transmit signals to the sub-apertures at different frequencies and with delays that cause respective transmit beams emanating from the sub-apertures to overlap each other in a region of interest (20). A multiline beamformer coupled to the transducer elements processes signals corresponding to ultrasound echoes to output image signals. A processor receives the image signals from the multiline beamformer and outputs image data corresponding to the image signals. The image data are processed by an image processor to output corresponding display signals that are applied to a display.
摘要:
The present invention relates to an ultrasonic probe comprising a group of piezoelectric elements consisting of a plurality of piezoelectric elements of a narrow card shape arrayed in a long-axis direction thereof and a rotational mechanism that rotates and oscillates said group of piezoelectric elements to the left and right in a short-axis direction thereof about the center of said long-axis direction; wherein said rotational mechanism is provided with a first bevel gear having teeth in at least an arc shape, a second bevel gear meshing with said first bevel gear and rotating in the horizontal direction, and a drive motor that rotates said second bevel gear; the rotational axis of said second bevel gear and the rotational axis of said drive motor are linked by a pulley linkage using a belt; and also at least one of said first bevel gear and said second bevel gear is made of a synthetic resin. This ensures that the generation of metallic noise is suppressed, thus removing a source of discomfort, particularly to patients.
摘要:
The invention concerns an imaging method for observing the propagation of a low-frequency shearing pulse wave simultaneously in multiple points of a diffusing viscoelastic medium (1). The method consists in transmitting at very high rate ultrasonic compression waves enabling to obtain a succession of images of the medium; then in delayed processing of the resulting images by intercorrelation to determine in each point of each image the movements of the medium while the shearing wave is being propagated.
摘要:
An ultrasonograph for carrying out examination simply and quickly while achieving high resolution and high-speed processing, an ultrasonic transducer, an examining instrument, and ultrasonographing device the subject matter are disclosed. Piezoelectric layers constituting an ultrasonic transducer are made of barium titanate BaTiO3 or lead titanate zirconate PZT is used and the thickness of each piezoelectric layer is 0.1 to 100 microm. The ultrasonograph comprises a drive unit for driving one of the piezoelectric layers, a sensing unit for sensing electric signals generated by piezoelectric layers receiving echos from the object subjected to ultrasonic wave transmitted by the driven piezoelectric layer, and a processing unit for visualizing the state of the subjected object by processing the sensed electric signal.
摘要:
A method of detecting defects in structures (11), comprising the steps of inducing mechanical energy in a structure (11) via the emission of a broad-band acoustic signal, and capturing over a time interval a plurality of images (20, 40, 50) of the structure (11) each of the plurality of images (20, 40, 50) comprised of a plurality of pixels arranged in a plurality of rows and columns each indicative of an intensity of infrared energy emitted by a portion of the structure (11).
摘要:
An ultrasonograph, an ultrasonic transducer, an inspection device, and an ultrasonic imaging device enabling easy and quick inspection and high-resolution or high-speed processing are provided. Barium titanate (BaTiO 3 ) or lead zirconate titanate (PZT) is used for a piezoelectric material constituting the ultrasonic transducer, and the thickness thereof is 0.1 µm to 100 µm. Included therein are a drive section capable of driving an arbitrary one of piezoelectric layers, a detecting section detecting electrical signals generated by the plural piezoelectric layers based on echoes from an irradiation object, the echoes being originated from an ultrasonic wave generated by the driven piezoelectric layer, and a processing section performing processing for visualizing a state of the irradiation object based on the detected electrical signals.